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endolith / reverse_cmap.py
Last active July 26, 2017 18:11 — forked from stefanv/reverse_cmap.py
Reverse colormap
from skimage import io as sio
import skimage
import numpy as np
import matplotlib.pyplot as plt
filename = 'Lennert jet.png'
img = skimage.img_as_float(sio.imread(filename))[:,:,:3]
jet = plt.cm.jet
@endolith
endolith / image_movie.py
Last active July 1, 2021 16:57
Display a folder of images very quickly
from tkinter import Tk, Label
from PIL import Image, ImageTk
import os
import sys
# Skip every n frames. Use 1 to show all images
skip = 1
try:
root = Tk()
@endolith
endolith / Fig. 3 n=3 50 pct overlap freq.png
Last active September 4, 2024 17:20
Borß–Martin windows in Python
Fig. 3 n=3 50 pct overlap freq.png
@endolith
endolith / election_simulator.py
Last active December 27, 2020 18:57
Election simulator
# -*- coding: utf-8 -*-
"""
Created on Sat Dec 17 11:33:35 2016
"""
from __future__ import division, print_function
from numpy.random import multivariate_normal
import matplotlib.pyplot as plt
from scipy.spatial.distance import cdist
import numpy as np
@endolith
endolith / value_parser.py
Last active February 5, 2021 21:36
Parse schematic component values
"""
Created on Wed Aug 24 2016
"""
prefixes = {
'Y': 1e24,
'Z': 1e21,
'E': 1e18,
'P': 1e15,
'T': 1e12,
@endolith
endolith / boinc_temp.py
Last active September 16, 2016 03:42
Turn off BOINC if it's hot outside
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import subprocess
import re
weather = subprocess.check_output(['inxi', '-w'])
temp = int(re.search('\((\D?\d+) C\)', weather).groups()[0])
if temp > 15:
subprocess.call(['systemctl', 'stop', 'boinc-client'])
@endolith
endolith / overlaps.py
Last active October 7, 2021 23:23
Window function constant overlap-add conditions (COLA)
from __future__ import division, print_function, absolute_import
import numpy as np
import scipy
from spectral import check_COLA # https://github.com/scipy/scipy/pull/6058
windows = np.unique(scipy.signal.windows._win_equiv.values())
windows = sorted(windows, key=lambda x: x.__name__)
for window in windows:
try:
@endolith
endolith / Harris.csv
Last active August 28, 2020 19:19
Window function properties
Window α Highest Side-Lobe Level (dB) Side-Lobe Fall-Off (dB/oct) Coherent Gain Equiv Noise BW (bins) 3.0-dB BW (bins) Scallop Loss (dB) Worst Case Process Loss (dB) 6.0-dB BW (bins) Overlap Correlation (%) Overlap Correlation (%)
75% OL 50% OL
Rectangle -13 -6 1.00 1.00 0.89 3.92 3.92 1.21 75.0 50.0
Triangle -27 -12 0.50 1.33 1.28 1.82 3.07 1.78 71.9 25.0
cos^α(X) Hanning 1.0 -23 -12 0.64 1.23 1.20 2.10 3.01 1.65 75.5 31.8
cos^α(X) Hanning 2.0 -32 -18 0.50 1.50 1.44 1.42 3.18 2.00 65.9 16.7
cos^α(X) Hanning 3.0 -39 -24 0.42 1.73 1.66 1.08 3.47 2.32 56.7 8.5
cos^α(X) Hanning 4.0 -47 -30 0.38 1.94 1.86 0.86 3.75 2.59 48.6 4.3
Hamming -43 -6 0.54 1.36 1.30 1.78 3.10 1.81 70.7 23.5
Riesz -21 -12 0.67 1.20 1.16 2.22 3.01 1.59 76.5 34.4
@endolith
endolith / readme.md
Last active May 11, 2016 02:17
Slow Amazon ublock list
@endolith
endolith / next_opt vs fft.py
Last active February 9, 2021 15:17
from __future__ import print_function
import numpy as np
from timeit_utils import timeit_fast
from numpy.random import rand
import matplotlib.pyplot as plt
import datetime
import socket
import sys
N_max = 100000